Local and Global
Weather Patterns

1. What is wind?
Wind can be air in motion. It's produced by uneven heating of Earth's surface
caused by the sun. Since Earth's surface is made of different land and water
formations,it can absorb the sun's radiation unevenly. Also when you talk about wind 2 things are necessary,wind and direction.

2. What is the jet stream?
It's a fast flowing river of air that's found in the atmosphere at around 12 km (kilometers) above Earth's surface. They can form at boundaries of air masses with differences in temperature, such as the polar region and warmer air near the south. Because of Earth's rotation, the effect is the streams flow west to east.

3. What are global wind patterns?
When the equator receives the Sun's direct rays,air is heated and starts to rise. When that happens it leaves low pressure areas behind. It can move about 30 degrees north or south of the equator. Then the warm air that's from the equator starts to cool and finally sinks. Most of the cooling air that sunk can go back to the equator, but the rest of the air flows toward the north or south pole.

What are prevailing westerlies?
Between 30 and 60 degrees, winds that move near the poles can curve toward the east. Winds are named by the direction they originate, these winds are called prevailing westerlies. Prevailing westerlies that are near the Northern Hemisphere are responsible for the weather patterns or the movements from the U.S. to Canada.

What is a sea breeze?
On a very warm summer day, different heating of the land and sea can lead to the development of local winds also called sea breezes. When air above the surface heats by radiation caused by the sun, it begins to expand or get bigger and rises, but lighter than the air around it. It's replaced by cooler that is drawn from above the sea. The sea breeze can offer pleasant cooling influences on a hot summer day.

What is land breeze?
It occurs at night and the land starts to cool faster than the sea. In this case, air above the warmer surface starts to heat and then rise, which pulls the air from the cooler surface.

The jet stream.
This is a land breeze diagram.
This is a sea breeze diagram.
Prevailing Westerlies
This is a wind turbine.

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